Methanol → HCID 86594410, compound

Participants

Reaction Steps

The (4R)-hydroxy-(2S)-N-{4-[5-(7-Methoxy-(11aS)-1,2,3,10,11,11a-hexahydro-5H-pyrrolo[2,1-c][1,4]benzodiazepine-5-one-8-yloxy)pentyloxy]-5-methoxy-2-nitrobenzoyl}pyrrolidine-2-carboxaldehyde diethyl thioacetal III (732 mg, 1.0 mmol) was dissolved in dichloromethane (5 mL), methanol (10 mL) and added SnCl2.2H2O (1.124 g, 5.0 mmol) was refluxed for 1.5 h. The reaction mixture was then carefully adjusted to pH 8 with saturated NaHCO3 solution and then extracted with ethyl acetate (3×20 mL). The combined organic phase was dried over Na2SO4 and evaporated under vacuum to afford the crude (4R)-hydroxy-(2S)-N-{4-[5-(7-Methoxy-(11aS)-1,2,3,10,11,11la-hexahydro-5H-pyrrolo[2,1-c][1,4]benzodiazepine-5-one-8-yloxy)pentyloxy]-5-methoxy-2-aminobenzoyl]pyrrolidine-2-carboxaldehyde diethyl thioacetal of formula IV.

Provenance & Evidence